Hot Dipped Galvanized Steel Pipe
Hot dipped galvanized steel pipe is coated with a layer of zinc on the surface, which can effectively prevent the oxidation corrosion of the pipe and prolong its service life. It is especially suitable for humid or corrosive environments (such as chemical plants, marine climates, etc.).
Hot dipped galvanized steel pipe is coated with a layer of zinc on the surface, which can effectively prevent the oxidation corrosion of the pipe and prolong its service life. It is especially suitable for humid or corrosive environments (such as chemical plants, marine climates, etc.). It can resist the impact of harsh climatic conditions on the pipe, including strong ultraviolet radiation and rain erosion. The zinc layer not only prevents corrosion, but also increases the strength of the pipe, making it more resistant to pressure, impact and other mechanical effects.
Galvanized steel pipes are divided into hot-dip galvanized steel pipes and cold-dip galvanized steel pipes. The hot-dip galvanized steel pipe has a thicker zinc layer and has the advantages of uniform coating, strong adhesion and long service life. The cost of cold-dip galvanized (electroplated) steel pipes is lower, but their corrosion resistance is much lower than that of hot-dip galvanized steel pipes.
Hot dipped galvanized steel pipe is made by reacting molten zinc with the iron matrix to form an alloy layer, so that the coating is tightly attached to the parent material. The processing workflow of hot dip galvanized steel pipe is: first pickle the steel pipe to remove the surface iron oxide; then put the pipe body into a solution containing NH4Cl and ZnCl2 or a mixed solution to clean it, and put it into the hot dip galvanizing tank for hot dip galvanizing. The molten galvanizing solution reacts with the matrix to form a zinc-iron alloy layer (the zinc-iron alloy layer has a dense structure and strong corrosion resistance). The steel pipe matrix, pure zinc layer, and alloy layer are integrated and have extremely strong corrosion resistance. Hot dip galvanized steel pipe is a hot dip galvanized welded steel pipe for low-pressure fluid transportation. It is hot dip galvanized on the inside and outside of the welded steel pipe, so that the inner and outer walls of the steel pipe are coated with zinc at the same time, which greatly improves the corrosion resistance of the steel pipe, reaching about 20 times that of ordinary steel pipes. Hot dip galvanized steel pipes are widely used in fire protection engineering, gas transportation, petroleum processing, industry, water conservancy, engineering construction, residential buildings, etc.
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